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Expired Canadian patentCanada

Flexible shaft coupling with polymeric resin hubs

CA 1317773 C · Owner: Sundstrand Corporation · Inventors: Timmermann, Donald N.; Busser, William F.; Kuliga, Thomas N.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A flexible shaft coupling of a type which uses a serpentine metal grid to connect teeth on hubs attached to driving and driven shafts has the sides of the teeth made of a polymeric resin material such a a polyurethane or a reinforced nylon 6/6, lubricated with PTFE. The side faces of the teeth deflect and deform under torque load to accommodate to the grid.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted May 18, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 18, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 10, 1989
GrantedMay 18, 1993
Term endedMay 18, 2010
Patent numberCA 1317773 C
Classification (IPC)F16D3/00 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMarch 10, 1989Patent grantedMay 18, 1993Term endedMay 18, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.